starbuck
Well-known member
I'm going to load up some 45-70 for deer season with 320gr cast gas checked bullets from gtbullets. I have imr 3031 and 4198. Quick load seems to think both can make it to 1700fps with with conservative pressures. Can anyone tell me what a realistic velocity is for gas checked lead bullets? 1700fps would be nice but I really don't need it. I'd like to have a solid 100y gun, 150y would be icing on the cake. My plan as of now is to use 4198 and shoot for 1300, 1400, 1500, 1600, and 1700 fps then see what happens. Any advise?
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